Dust-collector



(No Model.) 3 Shets-Sheet 1 F. PRINZ.

DUST COLLECTOR.

No. 560,107. Patented May 12, 1896.

ANDRKW B GRAHAM. PHOYO L TNO WASHINGTON Dc (No Model.) 3 Sheets-Sheet 2.

1?. PRINZ. DUST COLLECTOR.

No. 560,107. Patented May 12, 1896.

(No Model.) F PRINZ 3 Shegts-Sheet 3.

DUST COLLECTOR. No. 560;107. Patented May 12, 1896.

w afiuww/ I p I ANDREW RURANAM.PHWO-UTHO.WASNINGTBN,D.C

UNITED STATES PATENT OFFICE.

FAUSTIN PRIN Z, OF MILIVAUKEE, IVISCONSIN.

DUST-COLLECTOR.

SPECIFICATION forming part Of Letters Patent No. 560,107, dated May 12, 1896.

Application filed July 20, 1896. Serial No. 556,615. (No model.)

T0 at whom it may concern.-

Be it known that I, FAUSTIN PRINZ, a subject of the Emperor of Germany, residing at Milwaukee, in the county of Milwaukee and State of VVisconsimhave invented certain new and useful Improvements in Dust-Collectors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to dust-collectors, and has for its object to provide improved features in construction and in'arrangement of parts whereby the machine as a whole is compact in form, its parts easily accessible for repair or other purposes, and whereby it is efficient in operation.

It has further for its object to provide within the reel a chamber serving to cut off certain of the dust-collecting tubes from the inflow of the dust-laden air, said chamber being connected with a fan, so that air will be drawn through the dust-collecting tubes in the 0pposite direction to that in which the dustladen air has passed through the same, so as to remove the dust which has been deposited 011 the tubes and carry it into the cut-off chamber, from which it is carried away by a conveyer in said chamber.

It has furthermore for its object to so form the textile collecting-tube that the same may be drawn or stretched evenly throughout all its area or surface and thereby provide for a better separation of the dust from the air.

It has further for its object to provide an improved means of securing the dust-collecting tubes in place.

To the accomplishment of the foregoing and such other objects as may herein after appear the invention consists in the construction and in the combination of parts hereinafter particularly described, and then sought to be specifically defined by the claims, reference being had to the accompanying drawings, forming a part hereof.

Figure 1 is an end view of the machine. Fig. 2 is a vertical longitudinal section; Fig. 3, an enlarged detail View of a portion of the drum, cut-off chamber, and collecting-tubes. Fig. 4 is an enlarged detail View of the upper portion of one of the tubes. Fig. 5 is a similar view of the lower portion of the same tube, and Fig. 6 a cross'section through one of the tubes.

In the drawings the numeral 1 designates the two end standards of the frame, which are formed at their upper ends with the annular rings 2, in which fit and turn the rims 3, which constitute the ends of a drum 4, the several parts, with the exception of the body of the drum, being preferably formed of metal. The heads 5 of the drum are stationary and held from the rim by the brackets 5, and a packing of suitable material is placed between the heads and the inner face of the ring 3, so as to make a close and tight joint, and a strip of suitable material 7 is made to extend from a ring 8, which may be of wood, to a ring 9, set inside of the rim 8, so as to make an airtight joint at the junction of said parts. The body of the drum at is preferably made of wood and its ends fit in recesses 10, formed in the rims 3. In the periphery of the drum 4 are formed a number of openings 11, which may be of circular or other shape and are designed to receive the lower ends of the dustcollecting tubes 12, which are made of suitable reticulated or textile material.

The walls of the openings 11 are formed with recesses 13, which constitute seats for rings 14, formed of metal or similar material and attached to the inner ends of the tubes 12, so that when said rings are set into the recesses 13 the inner ends of the tubes will be held securely in the openings 11. The upper ends of the tubes 12 are provided each with a solid head 14, which may be formed of wood, and each head is formed with a pe ripheral groove 15, so that when the tube is drawn up around the head it may be secured thereto by a soft-metal wire 16, passed around the tube, so as to press it into the groove 15, and thus securely fasten the tube and head together. This enables the fabric composing the tube to be drawn taut and permits it to be readily disconnected from the head by simply loosening the wire when it is necessary to repair the tube or replace it with another. In order that the tube maybe stretched evenly, so that it will present the same surface throughout its length, I form each tube of two longitudinal sections 17 and join the two sections togetherby the opposite seams 18. It would be easier and less expensive to form the tubes by folding the material longitudinally and making only one scam therein; but when formed in that way the material cannot be drawn so as to make all sides of-the tube even and alike; but when the tube is made in sections and joined as described the material can be drawn so as to make all sides alike. Inasmuch as the radius of the circle described by the outer ends of the tubes is greater than that described by the inner ends, or, in other words, greater than the circumference of the drum 4, the heads 14 of the tubes are made oblong circumferentially of the reel, and the tubes accordingly taper from their outer ends toward their inner ends, as illustrated. The openings 11 in the drum 4 are made in parallel-lines, so that the tubes extending from end to end of the drum will be in line with each other, and thus a series of the tubes from one end to the other of the reel will be brought over the cut-off chamber and conveyer, as hereinafter described. The upper ends of the tubes are sustain ed by longitudinally-extending bars 19, there being a separate bar for each set of the tubes. The bars are connected to the tubes by means of bolts 20, which pass through the bars and into the heads of the tubes. The ends of the bars will fit over pins 21, projecting from the upper ends of arms 22, extending from the rims 3 and secured to flanges 23, projecting from said rims. The bars have a sliding movement on the pins 21 and are pressed outward by springs 24, encircling the pins 21. By these means the tubes are held normally in a distended position and are free to be collapsed lengthwise by depression of the bars 19. The bars are depressed periodically and in succession as their tubes come over the cut-off chamber, hereinafter described, by means of suitable knockers. These knockers may consist of the arms 25, of which there may be any desired number, pivoted to a shaft 26, supported in brackets 27, extendin g from uprights 28, which are supported by the rings 2 of the frame.

The uprights 28 have journaled in them a shaft 29, having at intervals teeth or cams 30, lying opposite to the rear ends of the arms 25 and adapted to contact with the arms in the rotation of the shaft 29, so as to raise the arms in order that they may drop and strike the bars 19 for the purpose of depressing the latter and collapsing the tubes. The arms 25 may normally be held from engagement with the bars 19 by springs 31, supported upon a crossbar 32, extending from one bracket 27 to the other and exerting a pressure against the arms 25. The cams or teeth 30 on the shaft 29 will be so formed or apportioned that they will cause the arms 25 to impart a series of blows on the bars 19 while the tubes are over the cut-off chamber or so as to cause the knockers to impart only one blow, as desired. These details are matters within the skill of the mechanic and, not involving invention, can be greatly varied, and therefore need not be more fully illustrated and described.

\Vithin the upper portion of the drum 4 and extending longitudinally thereof is the chamber 33, which for convenience I will designate as a cut-01f chamber. The chamber is open at its top, so that as the reel is revolved the lower ends of the tubes 12 will be-brought over the chamber and said tubes be cut off from communication with the interior of the drum 4. From opposite sides of the chamber 33 at the upper end thereof extend side wings 34, adapted to extend across the lower ends of the tubes which lie on each side of the tubes that for the time being open into the chamber 33. This guards against the possibility of air entering from the drum 4 into the lower ends of the tubes as they pass over the open' top of the chamber 33. Close contact is made between the inner surface of the drum 4 and the side wings 34 of the cut-off chamber by means of an elastic facing 34" to the side wings 34 next to the surface of the drum 4 or otherwise, so as to at all times insure close contact at such points and thus entirely exclude air from the tubes while for the time being they are over the cut-off chamber. The chamber 33 is suitably supported under the drum. It is preferably supported by springs 57, bearing against the under side of the wings 34 and resting upon the adjustable brackets 58, which are slotted and held to the heads of the drum by bolts 59, so that by adjusting the brackets the tension of the springs can be regulated. These springs press the wings 34 upward, so as to always insure close contact with the inner face of the drum, and thus prevent air passing from inside the drum into the cut-off chamber. Vertical ribs are formed on the inside of the heads 5, so as to form guides for the sides 61 of the cut-off chamber at their ends, and the space between these ribs and ends of the chamber may be packed with sheepskin with the wool on or other material, so as to make a close joint, excluding air. The sides and bottom of the cut-off chamber may be made in one piece, so as to be vertically adjustable together, or made in two parts, as indicated by dotted lines in Fig. 3, so that the lower part of the chamber can be stationary and secured in any suitable way to the heads of the drum, while the upper part will be vertically adjustable.

In the lower part of the cut-off chamber 33 is a screw eonveyer 35 for the purpose of delivering through the outlet 36 the dust which may be deposited in the chamber 33 from the dust-collecting tubes. The air will be prevented from entering the cut-off chamber through the out-let 36 by any suitable means. For instance, the flights of the convcyer 35 may fit to the walls of the outlet, as illustrated in Fig. 2, so as to constitute a cut-off valve.

The numeral 37 designates a fan,which may connect directly with a middlings-purifier or other source from which is taken dust-laden air, and it is caused to deliver the dust-laden air into the drum 4 through the outlet 38 of the fan, which opens through one head of the drum. The dust-laden air thus delivered into the drum is forced through the openings 11 in the drum into the dust-collecting tubes 12 and deposits its dust on the inside of the tubes, while the air freed from the dust passes through the sides of the tubes into the outside case or room. These tubes in the rotation of the Wheel are brought in succession over the cut-off chamber33, and while over that chamber blows are imparted to their supporting-bar, so as to jar the tubes and dislodge the dust from their inner surfaces. At the same time that this occurs air is drawn through the sides of the tubes over the chamber from the outside and carries the dust from the inside of the tubes down into the cut-off chamber, from whence it is conveyed by the conveyer 35. This back draft for dislodging the dust from the tube is produced by 0011- nectin g the cut-off chamber through a pipe 39 with the inlet of the fan 37, and the air which is thus drawn through the cut-off chamber is again returned into the drum through the outlet 38 of the fan. This back draft thus created not only draws the dust from the inside of the tubes but also carries it down into the lower portion of the cutoff chamber 33, where it is deposited and carried off by the con veyer For the purpose of preventing the dust in the cut-off chamber being carried into the fan through the pipe 39 I provide a hood 40 over the inlet to the pipe 39 from the cut-off chamber. This hood prevents the withdrawal of the dust through the pipe, and yet does not prevent the back draft through the tubes and cut-off chamber.

The reel is rotated by suitable means-for instance, by means of a pitman 41 at one end engaging ratchet-teeth 42 on one of the rims 3 of the drum and connected at the other end to a crank-arm 43, secured to a shaft 44:, journaled in a boxing 45, and carrying a beveled gear 46, which derives motion from another gear 47 on a shaft 48, which carries the powerbelt pulley 49. The shaft 44 carries a pulley 50, from which runs a belt 51 to a pulley 52 on the shaft 53 of the conveyer 35. This shaft 53 carries a second pulley 54, from which runs a belt 55 to a pulley 56 on the shaft 29, by which means power is transmitted to the conveyer 35 and to the shaft 29, which carries the cams that actuate the knockers 25. The pitman 4:1 is guided in its movements by a guide 62, extending from a stationary part of the frame.

Under the construction described the rotation of the reel is intermittent; but it could be made continuous without departing from the essential features of my invention, as is obvious. When intermittent, I prefer to so proportion the parts that one quarter-turn of the driving-shaft will move the reel the distance from one set of tubes to the other and allow three-fourths time for the knockers to strike several blows before the reel is further rotated to bring the next set of tubes in place over the cut-off chamber.

The collector formed as described may be set into the room without any inclosing case and will leave all parts exposed to view, so that they will be constantly under observation of the operator or millman. Easy access is also permitted to all parts, and, as before stated, the whole machine will be compact and strong and efficient in operation.

I have illustrated and described with particularity the preferred details of construction and arrangement of the several parts; but it is obvious that changes can be made therein without departing from the essential features of my invention.

It maybe observed that the rings at the inner ends of the flexible tubes constitute non-flexible shoulders to the tubes at their inner ends, adapted to bear against the inner side of the periphery of the drum, and being of larger diameter than the openings in the periphery of the drum effectuallyprevent the outward withdrawal of the tubes and enable the same to be drawn tight without tearing or injuring the tubes at their inner ends. It is preferred to have these rings or shoulders fit into the recesses formed in the walls of the periphery of the drum; but it is obvious that the shoulders would serve to prevent the withdrawal of the tubes even though no recesses were made in the walls of the openings.

Having described my invention and set forth its merits, what I claim is-- 1. In a dust-collector, the combination of a rotatable drum having openings in its periphery, dust-collectin g tubes fitting at their inner ends over the openings in the periphery of the drum so as to communicate with the illterior of the drum, closed heads to the outer ends of the tubes, a cut-off chamber inside the drum arranged to cut off the interior of the drum from the inner ends of the tubes as the latter are brought in succession opposite to the cut-off chamber, said tubes opening into the cut-off chamber as they are brought opposite thereto, a fan forpassing dust-laden air into the drum and through the tubes opening therein, and means for establishing communication between the cut-off chamber and the inlet of the fan, whereby a back draft is created through the tubes opposite the cut-off chamber and thence through the cut-off chamber and to the fan-inlet, substantially as and for the purposes described.

2. In a dust-collector, the combination of a rotatable drum having openings in its periphery, dust-collectin g tubes fitting at their inner ends over the openings in the periphery of the drum, closed heads to the outer ends of the tube, a cut-off chamber inside the drum arranged to cut off the interior of the drum from the inner ends of the tubes as the latter are brought in succession opposite to the cut-off chamber, said tubes opening into the cut-off chamber as they are brought opposite thereto, a fan for passing dust-laden air into the drum and through the tubes opening therein, means for establishing communication between the cut-off chamber and the inlet of the fan whereby a back draft is created through the tubes opposite the cut-off chamber and thence through the cut-oif chamber into the fan-inlet, and a conveyer in the cut-off chamber for delivering therefrom the dust deposited therein, substantially as and for the purposes described.

In a dust-collector, the combination of a rotatable drum having openings in its periphery, dust-collectin g tubes fitting at their inner ends over the openings in the periphery of the drum so as to communicate with the illterior of the drum, closed heads to the outer ends of the tubes, a cut-off chamber inside the drum arranged to cut off the interior of the drum from the inner ends of the tubes as the latter are brought in succession opposite to the cut-off chamber, said tubes opening into the cut-off chamber as they are brought opposite thereto, a fan for passing dust-laden air into the drum and through the tubes open ing therein, means for establishing communication between the cut-off chamber and the inlet of the fan whereby a back draft is created through the tubes opposite the cut-off chamber and thence through the cut-off chamber and to the fan-inlet, a conveyer in the cut-off chamber for delivering therefrom the dust deposited therein, and a hood at the end of the cut-off ehamberwhere communication is established with the fan, substantially as and for the purposes described.

at. In a dust-collector, the combination of the rotatable drum having openings in its periphery, dust-collecting tubes fitting at their inner ends over the openings in the periphery of the drum so as to communicate with the interior of the drum, closed heads to the outer ends of the tubes, a bar extending across the heads of the tubes and having the latter connected therewith, supports for said bar, knockers for periodically acting 011 said bar to simultaneously jar the several tubes connected to the bar, springs for restoring said bar to its normal position, a cut-off chamber inside the drum in communication with the tubes that are jarred, a fan for passing dust-laden air into the drum and through the tubes, and means for establishing communication between the cut-01f chamber and the fan-inlet to create a back draft through the tubes opening into the cut-off chamber and thence through said chamber to the fan-inlet substantially as and for the purposes described.

5. In a dust-collector, the combination of a rotatable drum having openings in its periphery, dust-eollectin g tubes fitting at their inner ends over the openings in the periphery of the drum, closed heads to the outer ends of the tubes, a cut-off chamber inside the drum and communicating with the tubes as they are brought in succession over the chamber, said chamber having at its upper end laterallyextending wings bearing against the interior of the drum over the open ends of the tubes to each side of the tubes in communication with the cut-off chamber, a packing between said wings and interior face of the drum, and springs for pressing said wings and packing against the drum, substantially as and for the purposes described.

6. In adust-eollector, the combination of a rotatable drum having openings in its periphery, dust-colleetin g tubes fitting at their inner ends over the openings in the periphery of the drum so as to communicate with the interior of the drum, heads to the outer ends of the tubes, a cut-off chamber inside the drum arranged to cut off the interior of the drum from the inner ends of the tubes as the latter are brought in succession over the cut-off chamber, stationary heads about which the drum rotates, and means for passing dustladen air into the end of the drum through one of its stationary heads, substantially as and for the purposes described.

7. In adust-collector, the combination of a rotatable drum having openings in its periphery, dust-collecting tubes closed at their outer ends and fitting at their inner ends over openings in the periphery of the drum and increasing in diameter from their inner to their outer ends, a cut-off chamber inside the drum arranged to cut off the interior of the drum from the inner ends of the tubes as the latter are brought in succession over the cut-off chamber and receive from said tubes dust deposited on their inner surfaces, stationary heads about which the drum rotates, means for passing dust-laden air into the drum through one head, and means for dislodging dust from the interior of the tubes while over the cut-off chamber, substantially as and for the purposes described.

8. In a dust-collector, a series of dust-collecting tubes of flexible porous material, each tube being formed of longitudinal sections of the material united together to enable the material to be stretched uniformly throughout its surface and means for passing dustladen air through said tubes substantially as and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

FAUSTIN PRINZ. lVitnesses WM. I FILTER, GEO. W. STROHMEYER.

ICC 

